Structural Energy: Change you can feel, inside and out. Rolfing® Structural Integration with Certified Rolfer™ Jennifer Eslinger. Rolfing® SI is a manual therapy that focuses on balancing the body by working on the connective tissue. Typically offered in a 10-series, with each session focusing on a different part of the body, Rolfing SI systematically addresses the whole body and gets to the root cause of pain. Clients can expect to experience greater flexibility, range of motion, alignment, and an ease in chronic tension.